I don't think there is a thread like this on this forum... and I think it would be wonderful if we had all the information ready to go on the wiki.
Please post which monsters can use what jobs. It wouldn't be bad idea to mention what job monsters start as(and in case of special examples, include which monster exactly. ie: Mother Globe giving RDM/WAR (or something). I'll edit this post with monsters as this things get moving. Feel free to burn a few discs to test them out .
(Pit) Antlion
WAR [Normally start as]